19998977990

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{2503001}}^1$

素因数の和:2503072

約数の個数: 32

約数和(自身を含む): 38926687104

約数和(自身を除く): 18927709114

約数列:

[1, 2, 5, 10, 17, 34, 47, 85, 94, 170, 235, 470, 799, 1598, 3995, 7990, 2503001, 5006002, 12515005, 25030010, 42551017, 85102034, 117641047, 212755085, 235282094, 425510170, 588205235, 1176410470, 1999897799, 3999795598, 9999488995, 19998977990]

約数ペア:

[(1, 19998977990), (2, 9999488995), (5, 3999795598), (10, 1999897799), (17, 1176410470), (34, 588205235), (47, 425510170), (85, 235282094), (94, 212755085), (170, 117641047), (235, 85102034), (470, 42551017), (799, 25030010), (1598, 12515005), (3995, 5006002), (7990, 2503001)]